Ultrashort pulse

Materials science

Optoelectronics

Broadband

Physics

Ferromagnetism

Far-infrared laser

Terahertz metamaterials

Optics

Spintronics

Terahertz radiation

Photomixing

Terahertz gap

Terahertz spectroscopy and technology

Condensed matter physics

Laser

Photonics

Applied Physics Letters

Spintronic terahertz emitters are broadband and efficient sources of terahertz radiation, which emerged at the intersection of ultrafast spintronics and terahertz photonics. They are based on efficient spin-current generation, spin-to-charge-current conversion, and current-to-field conversion at terahertz rates. In this Editorial, we review the recent developments and applications, the current understanding of the physical processes, and the future challenges and perspectives of broadband spintronic terahertz emitters.

Spintronic sources of ultrashort terahertz electromagnetic pulses